Crash when painting an ellipse to a large image

1 qt_memfill32                    qdrawhelper_sse2.cpp    254  0x7ffff7533234 
2 qt_memfill<unsigned int>        qdrawhelper_p.h         900  0x7ffff71ad878 
3 blend_color_argb                qdrawhelper.cpp         4346 0x7ffff71ad878 
4 drawEllipsePoints               qpaintengine_raster.cpp 4902 0x7ffff73dc6f7 
5 drawEllipse_midpoint_i          qpaintengine_raster.cpp 4930 0x7ffff73dc6f7 
6 QRasterPaintEngine::drawEllipse qpaintengine_raster.cpp 3390 0x7ffff73ecbe5 
7 QPainter::drawEllipse           qpainter.cpp            4248 0x7ffff73ffd40 
8 QPainter::drawEllipse           qpainter.h              660  0x401a0a       
9 main                            main.cpp                24   0x401529